Active control of membrane-type acoustic metamaterial
US9659557B2 · kind B2 · utility
6Cited by
7References
32Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 19, 2014 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Sep 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/32271
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Sound attenuation is performed using a sound attenuation panel using an electromagnetic or electrostatic response unit to modify resonance. The sound attenuation panel has an acoustically transparent planar, rigid frame divided into a plurality of individual cells configured for attenuating sound. In one configuration, each cell has a weight fixed to the membrane. The planar geometry of each said individual cell, the flexibility of the membrane, and the weight establish a base resonant frequency for sound attenuation. The electromagnetic or electrostatic response unit is configured to modify the resonant frequency of the cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.